1. **Write the numbers in standard form.** - The number $4.295 \times 10^5$ means move the decimal point 5 places to the right. $$4.295 \times 10^5 = 429500$$ - The number $2.8 \times 10^{-8}$ means move the decimal point 8 places to the left. $$2.8 \times 10^{-8} = 0.000000028$$ 2. **Evaluate and put the answer in scientific notation:** Given: $5.13 \times 10^4 - 3880$ First, write $5.13 \times 10^4$ in standard form: $$5.13 \times 10^4 = 51300$$ Now subtract: $$51300 - 3880 = 47420$$ Convert $47420$ back to scientific notation: $$47420 = 4.742 \times 10^4$$ **Final answers:** - $4.295 \times 10^5 = 429500$ - $2.8 \times 10^{-8} = 0.000000028$ - $5.13 \times 10^4 - 3880 = 4.742 \times 10^4$